Hello Release team,
while working on adopting my first package (fluidsynth), non-DFSG files
were discovered in all releases of fluidsynth, both unstable, testing,
stable and oldstable. (bug: #524566)
The non-DFSG files is a soundfont and some documentation, and is only
included in the upstream tarball, so no binary packages are affected.
I could use some advice on how to proceed, and possibly some assistance
as well.

I would propose to fix it first in unstable (by repacking upstream
tarball by removing the files an recreating the tarball and using
another upstream version in debian/changelog like adding .dfsg.1). If
that worked out ok, feel free to do similar things for the version in
stable and oldstable.